Thx but how does one tell what Inj's they have - I dont see any part # just 3 letters on the side

I am the semi-proud owner of an LT1 powered RX7 - exact year of engine kinda unknown - prob a 96 - heres my problem seems like I have a bad fuel inj. -- but how does one indentify GM mid to late 90's...

Bill from NJ with an LT1 powered RX7 that I'm gonna ask a few questions about